PubMed · 8008864
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P J Nunn, T D Nunn. 1993. Perfect posture.. https://pubmed.ncbi.nlm.nih.gov/8008864/
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Dental hygienists are well-educated professionals. Their responsibilities generally have been limited to scaling and polishing. Expanding into other clinical techniques, as permitted by practice laws, provides diversity for hygienists, lower cost services for patients and more time for dentists to provide the services their extra education allows.